High QualityHigh quality stainless steel plate material, firm, corrosion resistant and durable to use. Non-contact switch induction design with dual wireless infrared output sensor contact, stable and professional performance. Dual Color IndicatorThis product has double color indication, standby blue LED display and triggered red LED display. Adopt infrared optical technology , when the button is blue in the standby state, if there is insufficient light, you can accurately find the position of the switch. particularly suitable for dark places. When the infrared light reacts, the backlight turns red and the door opens. Widely UsedWidely used in access control systems.used for any access place and is commonly used in offices, banks, department stores and many more. Feature: 1. Non-contact sensor switch with blue backlight for access control system. 2. Adopt infrared optical technology, when the button is blue in the standby state, if there is insufficient light, you can accurately find the position of the switch. When the infrared light reacts, the backlight turns red and the door opens. 3. This infrared switch has no touch output, widely used in access control systems. 4. Non-contact infrared exit sensor, stable and professional performance. 5. High quality stainless steel plate material, firm, corrosion resistant and durable to use. 6. Exquisite workmanship, elegant appearance, 2 color LED indication, convenient to use. 7. Easy to install, no complicated tools required, convenient to use.